13071109921188 has 96 divisors (see below), whose sum is σ = 33646450201728. Its totient is φ = 3949187235840.

The previous prime is 13071109921187. The next prime is 13071109921189. The reversal of 13071109921188 is 88112990117031.

It is an interprime number because it is at equal distance from previous prime (13071109921187) and next prime (13071109921189).

It is a self number, because there is not a number n which added to its sum of digits gives 13071109921188.

It is not an unprimeable number, because it can be changed into a prime (13071109921187) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4168356 + ... + 6596772.

It is an arithmetic number, because the mean of its divisors is an integer number (350483856268).

Almost surely, 2^{13071109921188} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13071109921188, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16823225100864).

13071109921188 is an abundant number, since it is smaller than the sum of its proper divisors (20575340280540).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13071109921188 is a wasteful number, since it uses less digits than its factorization.

13071109921188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2428794 (or 2428770 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 51.

The spelling of 13071109921188 in words is "thirteen trillion, seventy-one billion, one hundred nine million, nine hundred twenty-one thousand, one hundred eighty-eight".